Mollusks
Habitat:
Most live in the ocean; some freshwater or moist terrestrial habitats
Reproduction:
Sexually through external fertilization
Anatomical Features:
- two body openings
- a muscular foot
- mantel
- shell
- most have open circulatory system
- only the class Cephalopoda has a highly developed nervous system
Evolutionary Milestones:
Enclosed body cavity
Predators/Prey:
- Feeding will depend on class (what the class eats, etc.), but mollusks use a tongue-like radula to drill, scrape, cut, and/or grate food.
- Can be carnivores, herbivores, parasites, or filter-feeders depending on which class of mollusk the organism is
Predators: Other mollusks, fish, birds, reptiles, amphibians, mammals
Symmetry:
Bilateral Symmetry
Mobility:
Mobility is by use of the organism's muscular foot and jet propulsion
Development:
Fertilized egg, trochophore, veliger, adult
Most live in the ocean; some freshwater or moist terrestrial habitats
Reproduction:
Sexually through external fertilization
Anatomical Features:
- two body openings
- a muscular foot
- mantel
- shell
- most have open circulatory system
- only the class Cephalopoda has a highly developed nervous system
Evolutionary Milestones:
Enclosed body cavity
Predators/Prey:
- Feeding will depend on class (what the class eats, etc.), but mollusks use a tongue-like radula to drill, scrape, cut, and/or grate food.
- Can be carnivores, herbivores, parasites, or filter-feeders depending on which class of mollusk the organism is
Predators: Other mollusks, fish, birds, reptiles, amphibians, mammals
Symmetry:
Bilateral Symmetry
Mobility:
Mobility is by use of the organism's muscular foot and jet propulsion
Development:
Fertilized egg, trochophore, veliger, adult